Exploratory and Mechanistic Studies of the Trimerization Reaction of Benzoylacetylenes in the Presence of Secondary Amine
A variety of benzoylacetylenes are trimerized to give the corresponding 1,3,5-tribenzoylbenzenes when heated with a catalytic amount of diethylamine.A large amount of diethylamine gives γ-(diethylamino)propenoylbenzene at the expense of 1,3,5-tribenzoylbe
High-spin cation radicals of methylenephosphoranes
Novel di(cation radical)s and tri(cation radical)s are prepared by oxidation of the corresponding 1,3-phenylenebis[[(4-tert- butylphenyl)methylene]triphenylphosphorane] and 1,3,5-benzenetriyltris[[(4- tert-butylphenyl)methylene]triphenylphosphorane] precu
Wienk, Martijn M.,Janssen, René A. J.
p. 5398 - 5403
(2007/10/03)
Design, synthesis, and characterization of three kinds of π-cross-conjugated hexacarbenes with high-spin (S = 6) ground states
Three kinds of nonlinearly π-conjugated hexadiazo compounds were obtained from the corresponding hexaketones for which cyclotrimerizaton of the ethynyl ketones to form 1,3,5-triaroylbenzenes and deoxygenation of a calix[6]arene were key steps. The diazo c